From: Oliver Neukum <oliver@xxxxxxxxxx>
usb:usbserial:visor: fix accounting in error case
data not pushed to the tty layer due to an error mustn't be counted
Signed-off-by: Oliver Neukum <oliver@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>
---
drivers/usb/serial/visor.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/drivers/usb/serial/visor.c b/drivers/usb/serial/visor.c
index 1aa5d20..8e2d6dd 100644
--- a/drivers/usb/serial/visor.c
+++ b/drivers/usb/serial/visor.c
@@ -513,7 +513,8 @@ static void visor_read_bulk_callback(struct urb *urb)
tty_kref_put(tty);
}
spin_lock(&priv->lock);
- priv->bytes_in += available_room;
+ if (tty)
+ priv->bytes_in += available_room;
} else {
spin_lock(&priv->lock);
--
1.6.4.2
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